Pollution Zones Research Articles

SELECTION OF BIOINDICATORS FOR AIR POLLUTION BASED ON PEROXIDASE ACTIVITY OF PLANT SPECIES FOUND IN THE CHEMBUR INDUSTRIAL AREA OF MUMBAI, INDIA -A PRIMARY STEP TO GREEN ZONE ENRICHMENT

Industrialization and population growth are the important factors for the deterioration of air quality in the current scenario. Air pollution monitoring using plants as bioindicators is the best and cheapest way. Oxidative stress induced on plants due to air pollution can be studied using antioxidant peroxidase enzyme activity. The present study aims at the comparative assessment of peroxidase activity of twelve plant species from the Chembur industrial area and less polluted zone of similar ecological conditions for two years. The peroxidase activity was determined using the spectrophotometric method. The observations based on the current investigation revealed a rise in the peroxidase activity of twelve plant species of the industrial zone as compared to the less polluted zone. It may indicate an increase in the resistant capacity of all experimental samples toward the oxidative stress caused due to air pollution. Plant species like Pithecellobium dulce (Roxb.) Benth, Ricinus communis L., Leucaena leucocephala (Lam.) de Wit., Albizia saman (Jacq.) Merr, Thespesia populnea (L.) Sol. ex. Correa, Polyalthia longifolia (Sonn.) Thwaites, Prosopis juliflora (SW.) DC., Terminalia catappa L. showed higher peroxidase activity values and hence may be used as bioindicators. Thespesia populnea (L.) Sol. ex. Correa, Polyalthia longifolia (Sonn.) Thwaites and Terminalia catappa L. being evergreen plants may be planted in good numbers in the Chembur industrial area. It may act as a primary step to ameliorate the industrial air pollution in the Chembur industrial zone by enhancing the green zone. This kind of investigation with other factors may help us to sustain our mother nature for future generations.

Population dynamics analysis of small mammal species in anthropogenic pollution zones of Southern Aral Region

The paper presents the results of the research on the analysis of the population dynamics of the background species of small mammals in the zones of technogenic pollution of the Southern Priaralie. It is established that the reaction of small mammal communities to desertification depends on their specificity, which in turn is determined by the ecological specificity of species. The study of the state of mammal populations in desertified ecosystems, as well as the study of their adaptation to changing environmental conditions is of great theoretical and practical importance.

Comparative Analysis of Zooplankton Population Dynamics in Polluted and Non-Polluted Coastal Zones of the Northern Arabian Sea

Comparative Analysis of Zooplankton Population Dynamics in Polluted and Non-Polluted Coastal Zones of the Northern Arabian Sea

Acidification and hypoxia in seawater, and pollutant enrichment in the sediments of Qi’ao Island mangrove wetlands, Pearl River Estuary, China

Mangrove forests are crucial in absorbing, storing, and purifying pollutants while maintaining ecological balance. A study was conducted in 2020 to investigate the biogeochemical processes of seawater and sedimentary environmental factors in the Qi'ao Island mangrove wetland. The study comprised two survey sections and ten survey stations within the mangrove forest and 16 large-scale survey stations in the adjacent sea area. During ebb tides, the mean concentrations of inorganic nitrogen and phosphate in Section D1 of the mangrove forest were 0.63 mg/L and 0.003 mg/L, respectively. These levels were significantly lower than the results observed in the adjacent sea area and Section D2 of the mangrove forest during flood tides. The mangrove forest efficiently absorbed and consumed nutrients, with the nitrogen-to-phosphorus ratio of consumed nutrients being notably higher than that typically utilized by plants during growth. We identified various biogeochemical processes, including nitrogen fixation, mineralization, nitrification, and denitrification, occurring within the mangrove forest. Seawater measurements in Section D1 during ebb tides showed the mean pH of 7.58 and dissolved oxygen levels of 4.52 mg/L, resulting in a dissolved oxygen saturation level of only 57.0 %. The low dissolved oxygen levels were attributed to organic matter degradation in the forest. Consequently, the longer the water retention time, the more obvious the trend of hypoxia and acidification was observed. In the adjacent sea area, the sedimentary environment was deemed healthy, with pollutants primarily originating from runoff and ship discharge from waterways and ports. However, within the mangrove forest, the sediments exhibited higher enrichment factors for organic carbon and sulfide, indicating significant pollution compared to the adjacent sea area. The sediments were conducive to the accumulation and burial of total Hg, Zn, and Cu, while other heavy metals did not show prominent deposition and enrichment. Notably, the enrichment factor of oils was as high as 4.37, leading to the formation of an oil pollution zone at the forest edge, and the enrichment of pollutants in sediment may inhibit the growth and expansion of mangroves. Overall, this study shed light on the occurrence of seawater acidification, hypoxia, and the behavior of sediment pollutants within the mangrove forest. The findings provide valuable insights to support efforts aimed at promoting and maintaining the ecosystem health of mangrove forests.

Segmented superimposed model of near-bore reservoir pollution skin factor for low porosity and permeability sandstone horizontal gas wells

Drilling and completion processes can often result in reservoir contamination around the wellbore, leading to decreased oil and gas productivity and significant economic losses for the oil field. This issue is particularly complex in sandstone reservoirs with low porosity and permeability horizontal wells, wherein traditional models have limited accuracy and applicability due to numerous unknown parameters. To address this challenge, this study focuses on non-uniform pollution around horizontal wells and proposes a new approach to divide the horizontal well pollution area into N micro-element sections. By establishing a seepage differential equation and employing the similar flow substitution method, we construct models for the pollution skin coefficient of each micro-element section as well as the total pollution skin coefficient. Furthermore, we combine empirical equation models and an oscillation-decreasing function model to develop a pollution radius distribution model that encompasses linear, parabolic, exponential, and logarithmic patterns. Through these advancements, we can realize a comprehensive reservoir damage assessment method. It is verified that the calculation error of this model is very small, and the influence of skin effect and reservoir anisotropy and the radius distribution of various heterogeneous pollution zones are fully considered. These findings indirectly suggest the rationality and practicality of the model presented in this paper. By incorporating actual gas well data into this model, it has been determined through discussion and analysis that the exponential distribution of the pollution radius has the greatest impact on the pollution skin factor along the horizontal well, from the heel to the toe. Increasing the pollution radius and decreasing the pollution permeability both result in an increase in the skin factor of the micro-segment and the total pollution skin factor of the horizontal well. However, compared to the pollution permeability, the radius of the pollution zone has a relatively minor effect on the total pollution skin factor. The proposed technique aims to serve as a valuable tool in optimizing and designing stimulation measures aimed at boosting production and minimizing formation damage. Through evaluation and analysis to reduce risks, protect reservoirs and extend well life, reduce costs, and enhance technical capabilities and economic benefits.

Morphophysiological features of the generative offspring of Aesculus hippocastanum L. from various ecologically unfavorable areas of an industrial city

The results of the influence of various ecological conditions of an industrial city (environmentally favorable zone, zones of motor vehicle emissions and metallurgical production, damage by the chestnut miner Cameraria ohridella Deschka & Dimič) on the functional state of the generative offspring of Aesculus hippocastanum L. were given. The average degree of the mass variability of the horse chestnut seeds was revealed, the level of which depended on the type of pollution. Higher values of the variation coefficient were established in seeds from monitoring sites ecologically unfavorable for plant growth. A decrease in the mass of ripe seeds of horse chestnut exposed to the effects of vehicle emissions, metallurgical production, and the severe attack of the chestnut moth C. ohridella was shown compared to samples from an ecologically favorable zone. It was found that the moisture loss in seeds from the ecologically favorable zone was on average 25.0 %, while from the main road zone – 15.2 %. A decrease in the content of storage proteins by an average of 14.5 % in the zones of anthropogenic pollution was observed. The largest values of this characteristics were shown by most trees from the ecologically favorable zone. In the seeds of A. hippocastanum plants, an increase in the activity of both benzidine peroxidase and catalase was established mainly under the effects of aerotechnogenic pollution. The level of enzyme activity depended on the type of phytotoxic emissions. A decrease in the activity of benzidine peroxidase was registered due to the effects of motor vehicle emissions, and an increase due to the effects of metallurgical production. A significant increase in catalase activity was found in the seeds of A. hippocastanum trees from two monitoring sites and, especially, under the influence of vehicle emissions, which can be explained by a compensatory reaction in response to reduced peroxidase activity. An individual reaction of the studied protein system (storage proteins, antioxidant enzymes) of the seeds of some trees was observed, regardless of the stress level of technogenic load and the type of pollutants. At each monitoring site, trees whose seeds had both increased and significantly decreased enzyme activity were identified. In the Botanical Garden and in the park near the metallurgical enterprise, the seeds of only one of three trees showed high activity of both peroxidase and catalase. Considering the physiological functions of the studied enzymes in the seeds and the reaction of the plant organism to biotic and abiotic stresses, the increase in the activation of catalase and peroxidase indicated their participation in antioxidant protection against active forms of oxygen to ensure a reduction in the intensity of damage processes in the generative offspring of A. hippocastanum L. The variability of the level of enzyme activity in horse chestnut seeds means adaptation to environmental conditions and, in general, reveals the adaptive ability of generative offspring to germinate due to the high antioxidant potential to counteract the development of oxidative stress under the influence of adverse environmental factors. It was concluded that the chronic influence of adverse factors of the urban environment causes the formation of individual seeds with increased antioxidant protection characteristics, which can be used as planting material when creating sustainable plantations in an industrial city.

The Supply of Macro- and Microelements to Cotton Plants at Different Distances from a Fertilizer Production Factory

Environmental pollution from industrial factories via air deposition is an urgent problem worldwide. Phosphate fertilizers, derived from rock phosphate, are characterized by the presence of potentially toxic elements, such as Zn, Co, Pb, Ni, Cr, Mn, Fe, and Cu, which are dispersed in the form of solid dust-like materials from the pipes of the factory. This study aimed to investigate the effects of airborne industrial emissions on the chemical and biochemical compositions of cotton grown in the immediate vicinity of a fertilizer factory in Uzbekistan. The composition of airborne dust deposited on the plants, the chemical composition of the cotton leaves before and after washing, as well as that of above- and below-ground plant organs, and their protein contents were determined. The concentrations of macro- and microelements in the leaves and roots were determined using an atomic absorption spectrophotometer. The fluorine contents in the leaves and in the roots were determined using a fluorine-selective electrode. The radius of dispersion of industrial emissions in the air was best described by measuring the fluorine contents in washed and unwashed cotton leaves. The relationships among P, K, Mg, Ca, S, F, and Mn in plant roots and leaves as a function of distance from the pollutant source were analyzed. Based on the fluorine contents in washed and unwashed cotton leaves, the two following zones of technogenic pollution were distinguished: the zone < 5 km from the factory, with high technogenic pollution, and the zone > 5 km from the factory, with moderate technogenic pollution. It was found that the resistance of cotton to air pollution from industrial emissions is determined by the ability of cotton plants to neutralize toxic compounds by increasing the influx of alkaline earth metals into the affected tissues. This study showed the possibility of growing cotton at a distance of >5 km from the fertilizer factory. It is strongly recommended to analyze the chemical composition of plants located in a highly polluted zone only after the dust particles have been washed off of the plant’s surface. Despite the resilience of cotton to industrial pollution, the monitoring of areas identified as pollution zones is recommended.

VETERINARY AND SANITARY ASSESSMENT OF THE CONTENT OF TECHNOLOGICALLY HARMFUL SUBSTANCES IN MILK AND THEIR REMOVAL FROM THE ANIMAL BODY

Тhe unfavorable ecological situation in the zones of man-made pollution is due to non-compliance with the requirements for the treatment of plants with toxic chemicals, the uncontrollable excess of emissions from industrial enterprises and motor vehicles, man-made disasters caused by the war of liberation, etc. As a result, particularly toxic substances, compounds of lead, cadmium, mercury, strontium and other heavy metals enter the atmosphere. Heavy metals, which are part of herbicides and fungicides, medicines, fertilizers, plant growth stimulants and poisons for their protection, accumulate in the environment, in particular in feed, enter the atmosphere with combustion products, respectively, have a negative impact on the well-being of animals, quality and safety of livestock products, in particular milk. Therefore, the priority direction, under conditions of increased man-made load on the environment and animals, was and is the monitoring of heavy metals in the trophic chain: soil-plant-feed-animal-product-human. According to a number of authors, a significant amount of toxic substances, including heavy metals that enter the animal's body with feed, water and by air are removed from it through the alimentary canal, kidneys, skin and mammary gland. According to Kovalchuk I.I., Fedoruka R.S. (Kovalchuk, Fedoruk, 2006), the content of heavy metals in the milk of cows under conditions of increased technogenic load on the environment depends on the intensity of harmful emissions, the content of heavy metals in them, the set of fodder in the diet and its balance, as well as the season of keeping, the period of lactation and the level of productivity. Therefore, an important task should be a scientific and practical in-depth study of man-made environmental pollution, which would include various studies of heavy metals, toxic chemicals in soil and feed, means of correcting their impact on the metabolism of productive animals.

Neurobiology and Changing Ecosystems: Mechanisms Underlying Responses to Human-Generated Environmental Impacts.

Human generated environmental change profoundly affects organisms that reside across diverse ecosystems. Although nervous systems evolved to flexibly sense, respond, and adapt to environmental change, it is unclear whether the rapid rate of environmental change outpaces the adaptive capacity of complex nervous systems. Here, we explore neural systems mediating responses to, or impacted by, changing environments, such as those induced by global heating, sensory pollution, and changing habitation zones. We focus on rising temperature and accelerated changes in environments that impact sensory experience as examples of perturbations that directly or indirectly impact neural function, respectively. We also explore a mechanism involved in cross-species interactions that arises from changing habitation zones. We demonstrate that anthropogenic influences on neurons, circuits, and behaviors are widespread across taxa and require further scientific investigation to understand principles underlying neural resilience to accelerating environmental change.SIGNIFICANCE STATEMENT Neural systems evolved over hundreds of millions of years to allow organisms to sense and respond to their environments - to be receptive and responsive, yet flexible. Recent rapid, human-generated environmental changes are testing the limits of the adaptive capacity of neural systems. This presents an opportunity and an urgency to understand how neurobiological processes, including molecular, cellular, and circuit-level mechanisms, are vulnerable or resilient to changing environmental conditions. We showcase examples that range from molecular to circuit to behavioral levels of analysis across several model species, framing a broad neuroscientific approach to explore topics of neural adaptation, plasticity, and resilience. We believe this emerging scientific area is of great societal and scientific importance and will provide a unique opportunity to reexamine our understanding of neural adaptation and the mechanisms underlying neural resilience.

Перспективи впровадження практичного заняття «Визначення зон забруднення ґрунтів тпв та розрахунок енерговитрат їхнього очищення» з дисципліни Безпека життєдіяльності

In this paper, a method of engineering calculations is proposed, which is necessary for the implementation of the practical lesson “Definition of soil contamination zones of municipal solid waste and calculation of energy costs of their cleaning” from the normative discipline of life safety in order to promote the deepening of knowledge on the protection of the lithosphere, as a component of the natural environment, of future specialists.
 The purpose of the article is the development of the engineering calculation methodology necessary for the implementation of the practical exercise “Definition of zones of soil contamination by municipal solid waste and calculation of energy costs of their cleaning” from the discipline of life safety to promote the deepening of knowledge on the protection of the lithosphere of future specialists.
 The proposed method of engineering calculations includes the calculation of: the size of the zones of soil contamination by pollutants (heavy metals, benzapyrene, petroleum products) around municipal solid waste landfills, the specific energy consumption of landfill soil cleaning by electrochemical remediation from heavy metal contamination, the energy consumption of soil cleaning of municipal solid waste disposal landfills of municipal solid waste both by individual heavy metals and general. The specific energy costs of cleaning the soil of municipal solid waste landfills by the method of electrochemical remediation from pollution were determined depending on the required level of heavy metal concentrations. The energy costs of cleaning the soil of municipal solid waste landfills by the electrochemical remediation method of pollution were determined taking into account the size of the pollution zones and the size of the municipal solid waste landfill. Based on the comparison and comparison of the experimental data obtained as a result of the research, it was established that the success rate of the students of both experimental groups according to the stobal scale was significantly higher than the success rate of the students of the control groups, which means the introduction of the proposed practical lesson from the regulatory discipline “Life Safety” into the educational process is promising. The construction of methods of engineering calculations for the protection of the atmosphere and hydrosphere require further research.

Impact of domestic and industrial effluent on marine environment at Karachi Port Trust (KPT) coastal area, Pakistan.

The extent of aquatic pollution of Karachi Port Trust (KPT) coastal area located at the south of Pakistan coast has increased considerably in the last few decades due to unrestricted discharge of sanitary waste. The current study lays emphasis on the identification of vulnerable zones severely impacted by pollution in the KPT coastal area using laboratory monitoring, geospatial techniques, and statistical analysis. During 2019, sampling was conducted along the KPT coastal area, and 54 samples of seawater were collected during pre- and post-monsoon seasons. The outcomes of physical and chemical analysis revealed that the concentrations of BOD (biochemical oxygen demand), COD (chemical oxygen demand), nitrate, phosphate, phenol, cyanide, and oil and grease frequently exceeded the permitted limit of international norms and reached much greater levels. The levels of perilous metals in the seawater samples were in the order Ni>Cr>Cu>Pb>Cd>As in both phases and also reached to elevated levels as a consequence of the indiscriminate discharge of untreated industrial and domestic wastewater. Based on detailed examination during pre- and post-monsoon, six sites near KPT, Lyari River outfall, and Karachi Harbour were identified as highly polluted zones due to heavy discharge of sanitary effluents at these sites. In particular, the industrial zones present in the formal and informal sectors of Karachi are responsible for the deterioration of the KPT coastal area. Therefore, it is advised to design and build a submerged drainage system to transport and distribute massive amounts of treated municipal and industrial waste to the deep open sea in order to minimize the high pollutant levels in these locations.

Research on Dust Migration and Dust Deposition Rules of Breathing Zone in Fully Mechanized Mining Face.

The dust in the breathing zone of the fully mechanized mining face poses a serious threat to the lives and health of the workers, and clarifying the distribution and settlement pattern of the dust in the breathing zone is an important foundation for reducing dust concentrations in the breathing zone and improving the workers' working environment. The dust concentration distribution at the mining face and the settlement results of different dust particle sizes along the breathing zone were analyzed in detail using a combination of computational fluid dynamics simulation and downhole measurements by establishing a highly simulated 3D solid model of the 2302 fully mechanized mining face at the Xinqiao coal mine. The study's findings reveal that dust from advanced support and coal-cutting processes converge within 20-60 m of the coal mining region, generating a high-concentration pollution zone at the height of the sidewalk breathing zone. The particle size of dust in the breathing zone is primarily concentrated between 1 and 40 μm, and the fully mechanized mining face is split into a rapid settling area, a medium settling area, and a slow settling area based on particle size settling speed. Eddy currents in the return airway lead to an increase in dust particles of 20-40 μm in the breathing zone area. The results of the study can provide a theoretical basis for dust management at the fully mechanized mining face for the breathing zone area.

EXTREME SITUATIONS AT FACILITIES OF THE FUEL AND ENERGY COMPLEX: ASSESSMENT OF THE RISK OF HUMAN INJURY

Problem statement. The task of assessing the zones of human damage in the event of an extreme situation at a gas station located in a crowded place in the city of Dnipro is under consideration. An analysis of the size of thermal air pollution zones and the zone of possible injury to people in the event of flying debris, created in the event of an extreme situation at a gas station, is being carried out. To solve the problems of this class, the development of specialized mathematical models is required. The purpose of the article. Assessment of the risk of injury to a person from the throwing action of debris and in the event of a fire at a gas station in the event of an emergency situation. Methodology. A numerical model based on the integration of Newton's second law for the movement of a material point in the air is used to analyze the damage zones during the flight of fragments. A computer program was created on the basis of this numerical model. Numerical integration of the energy equation is used to analyze thermal pollution zones during a fire at a gas station. This equation takes into account the speed of movement of air masses, coefficients of thermal conductivity, air temperature at the site of the fire. Scientific novelty. An effective numerical model has been developed for the analysis of damage zones from the throwing action of debris, which are formed in the event of an extreme situation at a gas station. Damage zones in the event of a possible fire at a gas station located in the city of Dnipro have been determined. Practical significance. A program has been developed for calculating the dynamics of the movement of debris in the air, which are formed in an extreme situation at a gas station. This makes it possible to determine the damage zones from the throwing action of fragments of different sizes. Zones of thermal air pollution are defined, which allow to assess the risk of thermal damage to people. Conclusions. An effective tool for analyzing the risk of injury to people in the event of flying debris and a fire at a gas station has been developed. The results of computational experiments are presented.

Conjugate Variability of Signs of the Female Generative System of Scots Pine (Pinus sylvestris L.) in the Conditions of Magnesite Pollution

In the conditions of environmental pollution by emissions of magnesite production (Combined Magnesite, Satka, Chelyabinsk region), a study of the conjugate variability of signs of the female generative system of the Scots pine (Pinus sylvestris L.) was carried out. Signs with a stable connection have been identified, as well as signs whose direction of interconnection changes under the influence of aerotechnogenic pollution. Thus, the relationship of the signs characterizing the size and mass of cones is rigidly genetically determined and is not violated in conditions of a strong level of pollution. The seed productivity of the pine stands, regardless of the growing conditions, is more closely related to the survival rates of ovules in the gametophytic period than in the period of embryonic development. However, in conditions of heavy pollution, the relationship between the survival of ovules in the 1st vegetative and embryonic periods is negative, which may indicate the effective elimination of abnormal gametophytes and the release of the stand from them in conditions of pollution. The strong weakening of trees and the low availability of mineral resources in conditions of high pH of the growing medium in the zone of heavy pollution cause an increase in the negative relationship between seed productivity and seed weight to a significant level. Also, the conditions of heavy pollution “contributed” to the development of a strategy of trees for the formation of small seeds with high quality and quality indicators, seedlings developed. Only in these growing conditions, with a decrease in seed weight, the indicators of germination energy, germination percentage, and morphometric indicators of seedlings significantly increased.

VALUATION OF TRANSPORTATION POLICY IN MAKASSAR CITY BASED ON VEHICLE EMISSION POLLUTION FOR SUSTAINABLE ZONE PLANNING

City expansion, vehicle growing number, fossil fuel consumption as non-renewable energy, and highest carbon emission has increased green house effect with potentially expanding global warming. Global warming has negative impacts on citizen quality of life as well as economic growth. Makassar City as one of the metropolitan in Indonesia with the high number of vehicle has a potential to endure global warming. This is excarbated by the decreasing environmental carrying capacity caused by household and industrial pollution and greater vehicle emission. This study aims to (1) identify the vehicle emission gas using descriptive analysis, (2) evaluate ambient air quality in several locations within Makassar City based on field measurement, and (3) formulate the zone plan with potential vehicle-sourced high pollution using AHP. It can be concluded from this study that 99% of Makassar City’s pollution is caused by vehicle emissions with specifically refers to vehicle ages, car engine types, and low maintenance. It is found that high pollution level occurs in the suburbs, while medium pollution level happens in the transition zone and low level of pollution in city center. Urban infrastructure improvement is carried out by Makassar City Development Agency (Bappeda) with consistency ratio between 0.05 and 0.06.

Mathematical Model of Multispectral Data Processing for a Mobile Ecology Monitoring Platform

The purpose of research is a mathematical justification of the process of processing multispectral data in order to detect local environmental pollution zones with the possibility of classifying the pollutant. Methods. The fundamentals of the applied theory of stochastic systems based on equations for multidimensional characteristic functions and functionals are used as a basic mathematical apparatus. When determining a contaminant, a criterion reflecting the ability of objects obeying Lambert's law is used. To solve the problem of object classification, approaches using binary logistic regression are applied. Statistical methods of analysis were used to evaluate the results of the study. Results. The obtained partial mathematical models allow us to take into account many factors affecting mobile environmental monitoring platforms operating in automatic mode. Substantiate the possibility of remote analysis of local environmental pollution zones, with the possibility of determining pollutants such as hydrocarbons, phosphate ions, etc., as well as searching for unauthorized locations of construction and household garbage. They increase the accuracy characteristics by 1,3 times when determining the parameters of selected objects due to the processing of data obtained in various spectral ranges. They contribute to reducing the computational complexity of the classification algorithm by 1,1 times, taking into account the volume of input data in a limited spectral range and reducing the resolution of the reference object, while not affecting the accuracy of classification. Conclusion. A mathematical model has been developed for processing data and images obtained in several spectral ranges during the operation of a multispectral device for an autonomous mobile environmental monitoring platform, which makes it possible to identify objects in the field of view of the device from a mobile platform, to obtain a detailed image of working scene objects with spatial reference relative to the coordinate system used, a distinctive feature of which is to increase the accuracy of calculating the coordinates of local zones pollution, and increasing the reliability of the classification of objects based on the characteristics of diffusive reflectivity in various spectral ranges.

Geostatistical analysis of the integration of spatial information on nitrate–N observations and agricultural land uses for establishing groundwater pollution zones

Geostatistical analysis of the integration of spatial information on nitrate–N observations and agricultural land uses for establishing groundwater pollution zones

MATHEMATICAL MODEL FOR RISK ASSESSMENT OF THERMAL DAMAGE IN CASE OF FIRE AT THE FACILITIES OF THE FUEL AND ENERGY COMPLEX

Problem statement. The task of prediction for thermal air pollution and assessing the risk of thermal damage to people during a fire at an industrial site is considered. The task is to calculate 3D temperature fields during a fire and, based on this, to assess the risk of thermal damage to people. The purpose of the article. Development of a 3D numerical model for calculating thermal air pollution and assessing the risk of thermal damage to workers at an industrial site in the case of a fire. Methodology. A three-dimensional energy equation was used to model the process of thermal air pollution at an industrial site in the case of a fire. A three-dimensional equation for the velocity potential is used to calculate the air flow velocity field at the industrial site. For the numerical integration of the equation for the velocity potential, the splitting method is used. For the numerical integration of the three-dimensional energy equation, it is split at the differential level into two equations. The first equation describes the spread of temperature due to the movement of air masses. The second equation describes the temperature distribution due to thermal conductivity. For the numerical integration of the first equation, a variable-triangular difference splitting scheme is used. An explicit difference scheme is used for the numerical integration of the second equation. Scientific novelty. A 3D numerical model was created, which allows to quickly calculate the dynamics of the formation of thermal air pollution areas at the industrial site and, based on this information, to predict the risk of thermal damage to people in the work zones at the industrial site. The model is based on the numerical integration of the aerodynamic and heat transfer equations. The model allows to quickly calculate the dynamics of the thermal zones’ formation at the industrial site in the case of a fire. Practical value. The developed model makes it possible to predict the dynamics of changes in temperature fields in the air that occur during a fire at an industrial site. The numerical model can be used to determine zones of intense thermal pollution and assess the risk of thermal damage to workers. Conclusions. On the basis of the developed 3D numerical model, a code was created for conducting a computational experiment. The developed code allows to quickly calculate the dynamics of the formation of thermal air pollution areas at an industrial site during a fire. Based on the received information, the risk of thermal damage to workers is assessed. The results of the computational experiment are presented.

The evaluation and optimization method of major events-driven polluted coastal zone renewal: a case of the polluted coastal zone in the Dalian Barracuda Bay Stadium Area

Introduction: Coastal zone pollution leads directly to a series of local ecological, economic, and social damages. The renewal of polluted coastal zones is a comprehensive challenge that includes the degeneration of ecological services, the decrease in urban livability, and the increase in maintenance costs. Since current ecological management pays more attention to relevant technologies and investments, it plays a limited role in effectively and quickly executing the renewal of polluted coastal zones. Nature-based solutions (NbS) aim to improve regional ecological restoration and renewal by balancing multiple interests such as ecology, economy, and society. Therefore, NbS is an effective way to address this comprehensive challenge. Current studies on NbS are actively exploring the theoretical framework and practice process of solving complex social challenges through an ecological approach.Methods: As an implanted production process, major events could provide robust policy support and continuous economic backing, which makes this an effective solution for challenges such as a lack of support and ineffective guarantees. This paper was centered around the goal of NbS theory, which is achieving comprehensive benefits, and establishing the Social-Economic-Ecological Systems framework (SEESs) that is driven by major events to achieve the renewal of polluted coastal zones.Results: The main objective of this study was to investigate the renewal-driving potential of major events in facilitating the restoration (renewal) of coastal ecosystems from the perspective of NbS. Specifically, it aimed to explore how major events promote the renewal of polluted coastal zones, thereby fostering local socioeconomic advancements and enabling regional sustainable development. Driven by hosting the 2023 China Asian Cup, the renewal of the polluted coastal zone in the area around Dalian Barracuda Bay Stadium was studied. Three subsystems and 12 indexes were selected as evaluation indexes of polluted coastal zone renewal driven by major events. Furthermore, using the entropy weight method, we constructed an evaluation system of polluted coastal zone renewal benefits driven by major events, then verified the synergistic effect of the major event on the social, economic, and ecological recovery of the polluted coastal zone. Moreover, we evaluated the change in the comprehensive scores of the polluted coastal zone from 2018 to 2021 under the impact of the 2023 Asian Cup. The spatial and temporal patterns of each subsystem and index were also discussed.Discussion: Finally, we proposed methods for the optimization of the renewal of urban coastal zone pollution driven by major events and provide solutions to cope with the negative impact of epidemics, strikes, and war throughout the process.

Legal regulation of nuclear and radiation safety in Ukraine (on the example of some foreign countries)

Peculiarities of the legal regime for ensuring nuclear and radiation safety of the NPP of Ukraine as a critical infrastructure object were studied in order to increase the level of emergency preparedness in peacetime, as well as in conditions of real military aggression. After all, among all branches of the use of nuclear energy, sources of ionizing radiation, nuclear energy remains the most dangerous against the background of the general unfavorable state of the environment, preservation of human life and health. The need for further improvement of all systems of ensuring national security, in particular the state system of physical protection of nuclear installations, nuclear materials, radioactive waste, and other sources of ionizing radiation, is substantiated; a unified state system of civil protection and their systemic interaction, first of all, by improving security legislation.According to the results of the study, taking into account the experience of the EU, first of all, of the countries in which nuclear power plants operate, an author’s approach was formulated regarding the introduction of 8 safety districts on the territory of Ukraine based on the identified zones of potential postaccident pollution around domestic and foreign nuclear power plants. The leadership and secretariat of security districts, according to the author of the article, should work on a permanent basis. It is proposed to achieve systemic interaction of security (Law of Ukraine “On the Basics of National Security of Ukraine”, etc.) and nuclear (Law of Ukraine “On the Use of Nuclear Energy and Radiation Safety”, etc.) legislation through the development and subsequent adoption of the draft Law “On Coordination of Executive Bodies authorities with local self-government bodies, business, the public in emergency situations”, which should determine the effective mechanisms of effective interaction of authorities at all levels, territorial communities on the principle of subsidiarity, as well as public-private partnership with business, public involvement; avoidance of duplication and contradictions in the preparation of Plans for overcoming emergency situations, involvement in the preparation and monitoring of the implementation of the specified plans of the scientific and expert environment, first of all permanently operating scientific and expert organizations. The research uses the general dialectical method, the method of scientific knowledge, the method of interpreting legal norms, the formal legal method, the comparative legal method, and the method of systemic analysis.